how define handle object in c++/CLR

MyPractice ^shan=gcnew MyPractice (L"Shahnawaz Talpur");

This executes well but I want to first declare variable ^shan and the ass开发者_如何学JAVAign the value how it could be

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Use nullptr :

// Declare and assign null
MyPractice^ shan = nullptr;

// Later when you need :
shan = gcnew MyPractice(L"Shahnawaz Talpur");